Each helper

In order to iterate over a vector of objects, an each helper can be used, with the following syntax:

{{#each into_iter}} 
    {{~# if first ~}}
        {{ index }} 
    {{~ else ~}}
        {{ index0 }} 
    {{~/if }} {{ this }} 
{{~/each}}

Associated variables such as this, first, index, index0 and struct fields are automatically generated and can be used without declaring them.